Gas-engine valve mechanism.



M. A. THIEL.

GA'S ENGINE VALVE MECHANISM.

APPLIOATION FILED AUG. 26, 1913.

1,12,0& Patexited Feb.9,1915.

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MARTIN A. THIEL, 0F MOUNTVERNON, OHIO, ASSIGNUR TO THE G. 65 G. COOPER 00., OF MOUNT VERNON, OHIO, A CORPORATION OF WEST VIRGINIA.

GAS-ENGINE VALVE MECHANISMI.

Specification of Letters Patent.

manta Feb,9,1l915.

Application filed August 26, 1913. Serial No. 786,662.

To all whom it may concern Be it known that I, ltlAnTIN A. Tr-rrnn, a citizen of the United States, and a resident of Mount Vernon, Knox county, State of Ohio, have invented certain new and useful Improvements in Gaslilngine Valve Mechanisms, of which the following is a description in such full, clear, and exact terms as will enable any person skilled in the art to which it pertains to make and use the same.

My invention relates to an improvement in gas engine valve gear of the type set forth in my prior Patents Nos. 1,066,062, dated July 1, 1913, and 1,070,558, dated August 19, 1913, the same being that in which a puppet type inlet valve cooperates with a cylindrical regulating valve which moves in unison with the inlet valve to open the air and gas ports or either of them and which turns under the governor impulse to regulate the amount of opening of the air and gas ports or either of them.

The improvements forming the subject of this application relate to the method of mounting the regulating valve on the stem of the puppet inlet valve and for characteristically operating these valves, all of which will be fully set forth hereinafter and particularly pointed out in the claims.

The accompanying drawing showing the preferred form of my invention represents a section taken axially along the stem of the inlet valve.

Referring to this drawing, 10 indicates the passage into the power cylinder or working chamber of the engine, the same being formed transversely in the walls 11 of the cylinder. The valve housing 12 is mounted on the cylinder surrounding the port or passage 10 and is itself surmounted by the bonnet 14.

15 indicates the inlet valve which is'of the puppet type and has a stem 16 extending centrally through the mechanism to the extreme top thereof. Within the valve housing 12 and surrounding the stem 16 is a cylindrical regulating valve 17 which has gas ports 17 and air ports 17". Outside of the regulating valve 17 is arranged the port sleeve 18 and outside of the port sleeve 18 is arranged a wall 19 which forms part of the housing 12 and is furnished with webs 19 meeting corresponding webs on the housing 12 and forming air and gas chambers 20 and 21. surrounding the parts 19, 18 and 17 The wall 19 is also furnished with air ports 19 and gas ports 19 coacting with the ports 17 and 17 and the corresponding orts in the port sleeve 18. These parts, 17, 18 and 19, have, in my present structure, the same essential operation as in my prior Patent No. 1,070,558, dated August 19, 1913, which is to say, the port sleeve 18 is of a peculiar construction (set forth in the prior patent) allowing the area of its ports to be adjusted to suit the quality of the gas being used and the regulating valve 17 reciprocates in unison with the inlet valve for the purpose of opening and closing these ports and allowing the charge to enter the cylinder wall, the said valve 17 simultaneously operating under the p governor impulse to regulate the engine.

' Tn carrying out my present invention 1 form the port or opening 10 to receive the annular seat 22 against which the valve 15 closes. This seat 22 is also formed to carry 12 and regulating valve 17 and extends up ward to a collar 25 furnished with a centrally disposed sleeve 26 that slides on the stein 16. The outer end of the valve 17 carries a head 27 which is centrally recessed to allow the upward extremity of the sleeve 26 to fit loosely in it, the collar 25 hearing up against the under side of the head 27 due to the pressure of the spring 21 against it. A sleeve 28 is adjustably fastened by threads 29 on the stem 16 and surrounds the stem above the head 27 of the valve 17. At its lower end the sleeve 28 has a flange 30 which bears down on the head 27 of the valve 17. At its upper extremity the stem 16 of the inlet valve has a nut 31 which engages the upper end of the sleeve 28 and locks the same adjustably on the stem 16.

The construction above described allows the spring 24- to keep the valve 15 yieldingly seated. this effect being obtained by the pres sure of the spring against the collar 25 and transmitted from the same to the sleeve 28 which. sleeve is fast on the stem of the inlet valve. A. second efiect of this arrangement is that the regulating valve 17 is held to reciprocate with the inlet valve and its stem, the regulating valve moving'down with the stem by the positive pressure of the flange 30 and sleeve moving up with the stem by the pressure of the spring 24: connected through the collar 25. A third client of this arrangement is that the regulating valve is permitted to center itself in the port sleeve 18 and its free movement without clamping is assured because the head 27 of the regulating valve does not bear simply against the upper extremity of the sleeve 26 but is allowed a slight lateral movement which, however, in nowise interferes with the accuracy of the'longitudinal or axial movement of the regulating valve due to the movement of the inlet valve stem. A fourth result of the above described arrangement is that the position of the regulating valve relatively to' the. inlet valve may be easily and correctlyadjusted, without taking down are the pa ts h valve r; by laxjing the nut 31 and applying wrench to the hexagonal upper "extremity of the stem 16. In thismanner the stem may be rotated in the sleeve'28 and the position of the valve 15 vertically with regard to the regulating valve and other parts adjusted through the operation or the threads 29. When this adj'ustment is made the nut 31 may screwed back to its active position thereby holding the parts' secure in the adj u s tment desired.

" The bonnet 1% has a guide 82 in which the upper extremity of the sleeve 28 moves freely. A toe-lever 33 is hung at 34: on the bpnn'et guide; The outer end of this lever isarticnlated to the eccentric (not shown). The toe-lever bears with a rolling contact on a floating lever 3 which pinned at 35 to the sleeye 28 and supported at its outer end in a'swinging link 36." By this gear an easy and noiseless motion of the valvemechanism in opening and closing is brought about.

37 indicates the oscillating annulus with its governor connection 38,"" f or imparting the "turning motion to the regulating valve to vary the amount the charge, which annulus and governor connection are set forth in my prior Patent ilo. 1,066,062, dated July 1, 191a.

'The advantages of the above described structure have been particularly enumerated and in many respects beiobviousf Under this head it should be noted that the valve mechanism is most easily accessible in that it may be reached for adjustment without disconnecting the parts. It should also be noted that improved construction lends itself to easy "lubrication of the valve mecha- The lubricant is furnished from a single source (the cup 39) andpasses from a chamber 40 in the bonnet successively .to'the pins 3,4 and 85 fr o1n' which it drips to the head or top of the valve 17 .and thence be tween said valve and the port sleeve 18 downward into the cylinder Where the excess is consumed.

Having thus described my invention, what I claim as new and desire to secure by Lettcrs Patent of the United States, is

' 1. In a gas engine inlet valve mechanism the combination with the cylinder and housing of a puppet inlet valve, a stem, a part adjustable on the stem, means for driving the valve through medium of said part, a regulating valve mounted loosely on the stem and a spring serving to hold the regulating valve yieldingly in position on the stenrand to seat the inlet valve.

2. In a gas engine valve mechanism the combination with the cylinder and its housing of a puppet inlet valve, a stem therefor, a member adjustable on the stem, means for operating the valve through the medium of said member, a regulating valve pressing against said member and a spring serving to hold the regulating valve against said member and also to seat the inlet valve.

3. in a gas engine valve mechanism the combination with the cylinder and valve housing of a puppet inlet valve, a spider guiding near the cylinder, a member adjustably attached to the stem, means for operating the inlet valve through the medium of said member, a regulating valve pressing against said member and an expansive spiral spring within the regulating valve, the spring surrounding the valve stem and bearing between the spider and regulating valve to hold the regulating valvc to move with the stem and to seat the inlet valve. w

4. In a gas engine valve mechanism the combination with the cylindeu and valve housing of a puppet inlet valve, a spider guiding near the'cylinder, a member adjust-ably attached to the stem, means for operating the'inlet valve through the medium of said member,- a regulating valve pressing against said member, an expansive spiral spring within the regulating valve, the spring surrounding the valve stem and hearing between the spider and regulating valve to hold the regulating valve to move with the stem and to seat the inlet valve, and a removable seat for the inlet valve held on the cylinder and carrying the said spider.

o" In a gas engine valve mechanism the combination with the cylinder and housing and bonnet of the inlet valve, a stem therefor, a sleeve threaded on the stem and'guided in the bonnet, a lock nut between the sleeve and stem at the outer ends thereof, means for operating the inlet valve through the medium of the sleeve, a regulating valve in the housing and a spring serving to press renilating valve against the sleeve and to sea the inlet valvei i '6. In a gas engine valve mechanism the combination with the cylinder and housing and bonnet of the inlet valve, a stem there for, a sleeve threaded on the stem and guided in the bonnet, a lock nut between the sleeve and stem at the outer ends thereof, means for operating the inlet valve through the medium of the sleeve, a regulating valve in the housing and a spring serving to press the regulating valve against the sleeve and to seat the inlet valve, said spring located Within the regulating valve, a seat for the inlet valve removably held on the cylinder and a spider bearing on said seat and engaged by the base of the stem.

In testimony whereof I have hereunto signed my name in the presence of two witnesses.

MARTIN A. THIEL.

Witnesses:

ZENNO E. TAYLOR, DESAULT B. KIRKS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

